The Crystal Structure of Tetratellurotetracene (TTeT) and Polymorphism of Tetraselenotetracene (TSeT)

Abstract

Abstract The crystal structure of TTeT has been determined; salient features include a linear chain structure and very short intermolecular Te-Te contacts. A previously unreported polymorph of TSeT was found to be isomorphous to TTeT. These data, taken with the reported data for TTT, indicate a series of three crystals each with a lattice constant which is approximately twice the van der Waals radius of the chalcogen.